Hemodynamic Profiles of Pulmonary Hypertension
Type | Mean Pulmonary Artery Pressure at Rest | Pulmonary Artery Wedge Pressure* | Pulmonary Vascular Resistance† |
|---|---|---|---|
Pre-capillary pulmonary hypertension (eg, chronic lung disorders, venous thromboembolic disease) | > 20 mm Hg | Normal (≤ 15 mm Hg) | Elevated (> 2 Wood units) |
Post-capillary pulmonary hypertension (eg, left heart disease) | > 20 mm Hg | Elevated (> 15 mm Hg) | Normal (< 2 Wood units) |
Combined pre-capillary and post-capillary pulmonary hypertension (eg, chronic pre-capillary vascular remodeling that occurs in patients who also have post-capillary pulmonary hypertension due to heart disease) | > 20 mmHg | Elevated (> 15 mm Hg) | Elevated (> 2 Wood units) |
* Also called pulmonary artery occlusion pressure. | |||
† Measured by right heart catheterization. Wood unit, also called hybrid resistance unit, is mm Hg × min/L. | |||
Data from Humbert M, Kovacs G, Hoeper MM, et al. 2022 ESC/ERS Guidelines for the diagnosis and treatment of pulmonary hypertension. Eur Respir J 2023;61(1):2200879. Published 2023 Jan 6. doi:10.1183/13993003.00879-2022 | |||